body {
    background: linear-gradient(135deg, #4e54c8, #8f94fb);
    color: #fff;
}
.dashboard-title {
    color: #fff;
    text-shadow: 0 0 10px rgba(255,255,0,0.8);
}
.data-card {
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.25);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}
.data-card:hover {
    box-shadow: 0 10px 30px rgba(255,255,0,0.5);
}
.data-title {
    color: #fff;
}
.data-value {
    color: #ffcc00;
}
.data-trend {
    color: #ffe066;
}
.theme-selector {
    background-color: rgba(255,255,0,0.5);
    color: #fff;
    background-image: url('data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http://www.w3.org/2000/svg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23fff%22%20d%3D%22M287,197.3L159.2,69.5c-4.7-4.7-12.3-4.7-17,0L5.4,197.3c-4.7,4.7-4.7,12.3,0,17l17,17c4.7,4.7,12.3,4.7,17,0l110.6-110.6c4.7-4.7,12.3-4.7,17,0l110.6,110.6c4.7,4.7-12.3,4.7,17,0l17-17C291.7,209.5,291.7,202,287,197.3z%22/%3E%3C/svg%3E');
}
.theme-selector option {
    background-color: #ffcc00;
    color: #fff;
} 